Firstly, you are required to hold a current credit card, fill in your personal details, on the webpage, then choose a user name and password, then once, the information has been accepted, you are automatically able to buy or sell you through Ebay.
Inorder to buy through, Ebay, you must be logged into the site, ie: User Name Provided and Password Provided.
You then need to serach the item/s you request and by bidding through the bidding process, you could Win the item, if the item is still available. To bid, you need to put in a higher amount than another bidder, the site will let you know, if more bidding amounts are required. Once you, are the successful winner, you will be notified, by email through Ebay and you will need to contact the seller, inorder to comfirm your paying detail, as well as exchanging details. Once you have satisfactorily, paid the seller you will, need to wait until your item/s arrive in the mail, once they arrive you will need to follow the feedback prompt in the site, and leave positive/negative feedback, for the seller.